MC68HC908GR8CDW Freescale Semiconductor, MC68HC908GR8CDW Datasheet - Page 97
MC68HC908GR8CDW
Manufacturer Part Number
MC68HC908GR8CDW
Description
IC MCU 8K FLASH 8MHZ 28-SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908GR4CFAE.pdf
(408 pages)
Specifications of MC68HC908GR8CDW
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
17
Program Memory Size
7.5KB (7.5K x 8)
Program Memory Type
FLASH
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 6x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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MC68HC908GR8 — Rev 4.0
MOTOROLA
;
HIBYTE
LOBYTE
DOLO
RETURN
BW — Break Wait Bit
BW can be read within the break interrupt routine. The user can modify
the return address on the stack by subtracting 1 from it. The following
code is an example.
This code works if the H register was stacked in the break interrupt
routine. Execute this code at the end of the break interrupt routine.
Freescale Semiconductor, Inc.
This read/write bit is set when a break interrupt causes an exit from
wait mode. Clear BW by writing a logic 0 to it. Reset clears BW.
For More Information On This Product,
1 = Break interrupt during wait mode
0 = No break interrupt during wait mode
EQU
EQU
If not BW, do RTI
BRCLR
TST
BNE
DEC
DEC
PULH
RTI
Go to: www.freescale.com
Break Module (BRK)
5
6
BW,BSR, RETURN
LOBYTE,SP
DOLO
HIBYTE,SP
LOBYTE,SP
;
;
; If RETURNLO is not 0,
; then just decrement low byte.
; Else deal with high byte also.
; Point to WAIT/STOP opcode.
; Restore H register.
See if wait mode or stop mode
was exited by break.
Break Module Registers
Break Module (BRK)
Technical Data
97
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